*{padding:0;margin:0}
html,body {width: 100%;height:100%;background: #666;}

@mixin setBtn($width, $height, $left, $top, $img) {
    position: absolute;
    top: $top;
    left: $left;
    width: $width;
    height: $height;
    background: url('./img/' + $img + '.png') no-repeat;
    border:none;
    outline: none;
    cursor: pointer;
    z-index: 666;
}
.poster {
  position: absolute;
  top: 200px;
  left: 50%;
  transform: translateX(-50%);
  width: 820px;
  height: 280px;
  z-index: 5;
  .poster-main{
    position: absolute;
    top: 0;
    left: 30px;
    width: 100%;
    height:100%;
    .btn-left {
    @include setBtn(36px, 36px, -20.5px, 110px, 'btn-left');
    }
    .btn-right {
    @include setBtn(36px, 36px, 738.5px, 110px, 'btn-right');
    }
    .curr-bg {
        display: block;
        position: absolute;
        top: -2px;
        left: 61px;
        width: 638px;
        height: 273px;
        background:url('./img/curr-bg.png') no-repeat center top;
        z-index: 666;
    }
    .poster-list{
        position: absolute;
        top: 8px;
        left: 0;
        .poster-item {
            position: absolute;
            left: 0px;
            top: 0px;
            img {
                width: 100%;
                height: 100%;
            }
        }
    }
    a, img {
        display: block;
    }
  }
}